Compound lumber and method of making same



1933. R. H. HARWELL 1,924,240

COMPOUND LUMBER AND METHOD OF MAKING SAME Filed March 5, 19:50

rm o 1 2 i a z [a 1 gwvcntoz Patented Aug. 29, 1933 i 3 i g 1,924,240, h 1 7 o COMPOUND. LUMBER Ami METHOD or BobertH; Harwell;Lewisbumgy'l enng assignor to V Cyrus 6. Houston, .l'lewlsburggi 'lenn. Application March 5,1930. Serial no. 433,38?- cla ms (or 2o -91) g:- I H A i This invention relates to compound lumber and h-ihitivef According to the present invention, such, is designed for the production of relatively thin short andirregular lengths of; wooden stripsare panels ,from small irregular'lengths of wood as-f assembled in aplant havingthe necessary'tools sembled and connected in a new and; improved and" machinery for ,that; purpose and the pieces 5 manner such as to provide a strong and rigid or wood are accurately assembled,- strongly;cona} '15 anges in the f orm,'proportion, size and minor length h b i i In the draw-h1g ,en't invention.

panel {of desired dimensions which can be-con nected together and then cutand' shaped soas veniently handled asiaunit, a's for instance in toproduce compound or composite panels of lining closets; and the like. v great strength anddurability, 1

,With these and other objectsin view, the pres- Referring 0 11re1 0 the d w st Will be 10 ent invention consists in the combination and seen that a plurali o st pso 'w -irre uan a rangement of parts as will-be hereinafter more lar lengths are assembleden en d. e fully described, illustrated in the accompanying ,toedge to form, a rectangul'arslab the opposite drawingand particularly pointed outinthe aplongitudinal edges of which are" defined by pended claims, it of course being understood that W e Strips 3 -Whi e dtm :fl l

details may be made; within the sco j t -As shown in FigureAof'thedrawing, the joint claims, without departing from-the. spirit or b e h ti g endsof adja n st D sacrificing any of the advantages of th inveneludes: a-tongue 4 on one strip fitting in a groove" tion. 1 r 5 in the otherstrip, whereby thewooden strips 1 '7 v may be conveniently and accurately assembled I Figure 1 is a perspective" view ofgaslab formed ,W t 'th r c r nd n xt ri imp op of pieces of d), m d d t d. in alignment. I In order ,to have apermanent conaccordancawith the present invention and prenection b t en W d p pthe l'fl n ifif paratory to being cut into the panel of" the presprovided with glue as w a 1 r f M As shown in Figure 3 of the drawing thejoint aoi Figure 2 is a perspective viewof a panel cut w ih onsi udm me t edg s of -adiafrom theslah shown in Figure-1:. 1 n bl sr p o qodi o med-bye c n Figure 3 is an enlarged fragmentary sectional ng uq e- 011z ne blockpr Strip i t k n th 1i /3 3. i Figure 11 and shown and a concave edge 8-on-the other block or strip,

to partly cut or severed inthecourse of forming o that t e e parts may e conveniently fi 5v .twopanelsfrom theslab. 3 together in a manner to insure'the'pr-oper regis- I igureA is an enlarged fragmentary sectional i f th Puter PQ 9 eb k view taken on the line 44 of Figure 1 andeshowe O C e. glue 9-1 l yed rigidly: and p li- -ing the joint between abutted ends of adjacent m tl q n t s a ethe r lengths or stripseofwood lO Q Wd FIaLJ-Qmtsip r V 90 Figure 5 is a similar view taken on the line when a Slab, made 1 1 .aSIShOWII n Figure 1 V 5-5 of Figure 2, v a of thedrawing, has been completed, it is then Figure 6 is a fragmentary sectional View simi- Placed in a Suitable machine Which Will Clamp lar to Figure 3 but showing a different form of the-slab at its opposite sides so as to hold it joint between longitudinally meeting edges of adrigidly W e it is being cut by a w in th 95 jacent strips of wood; I 7 plane of the slab so as to divide the latter into Figure 7 is a cross-sectional viewtaken transtWO panels of substantially half the thickness of versely through the panel sh n in Figure z the original slab. In Figure 3, the slab has been Figure 8 is a cross-sectional view similar to p tly cut p p f t0 d v d it n a Figure 7 but showing a different form of joint betwo p n A the Slab een Cut into 100 wooden strips which are ordinarily waste matey have its rebbeted e al d fitted? tween longitudinally meeting edges of adjacen P s, Oppositelongitudinal edges of the strips of wood, i panel are rabbeted as indicated at 10 in Figure 2 carrying out the present invention, it is pro- 0f the drawing, S1101! rebbets Of Course being .reposed to utilize short and irregular lengths of .versely disposed in Order that a Companion panel rial and not useful because of their lack of effect v y to One Of the I d d s of an length. For instance, in using short and irreguadjacent panel. By having the opposite longitui lar lengths of cedar wood for lining closets and dinal d es of the panel formed of uous the like, the labor necessary in hand1ing,assemlengthsthe intermediate short length sections blingand securing such short lengths is proare not only effectually held together but the rality of short and. irregular lengths.

Instead of employing the form of joint shown in Figure 3 ofthe drawing, a tongue and groove joint of the type shown in Figure 6 may be employed, wherein the tongue 11 is tapered somewhat so as to assist in the assemblage of adjacent n the slab, and then longitudinally rabbeting th opposite longitudinal edges of the panels.

strips of wood and to eifect' a strong and durable connection between the strips. 7

After the slab has been cut into two panels, the joint between the abutted ends of adjacent strips of course has the form shown in Figure 5 of the drawing, while the joint between the longitudinal edges of adjacent strips will have the form shown in Figure '7 of the drawing.

In Figure 801 the drawing, there has been shown a panel having straight joints 12 between the longitudinal edges of adjacent strips as distinguished from the curved joint: of Figures 3 and 1 panel, for the reason that strips of wood of about an inch in thickness can-be conveniently handled and assembled into a slab, whereas it would be 'very inconvenient and laborious, if not practically impossible, to first'cutthe short strips'to their final thickness andthen assemble such thin strips into the panel form. It has been found that by employing strips of about an inchthick, they can be quickly and'conveniently brought together in accurate alignment, glued together so as to form a slab and then the slab sawed longitudinally through its center so as to divide it'into two equal panels of the desired thickness.

While, in Figure 80f the drawing, the joints between the'longitudinal edges of adjacent strips have been shown straighter at right angles to'the opposite'faces of the panel, it is preferred to have straight form'of joint shownin Figure 8. For

instance; should a hard piece of sawdustcollect I with the glue in the straight joint shown in Figure 8, it might space thewooden strips so as to show light thru' the joint and thus give a more or less unsightly appearance to the panel, all of form of joint which is not straight or at right angles to the front and back faces of the panel.

What is claimed is: V v 1. The herein described method of making compound lumber, which consists in assembling strips end for end and edge to edge and gluing the strips together into a slab whereby each face of each panel comprises the continuous faces of said strips, thensevering the slab in the plane thereof and dividing it into panels of less thickness than '2. The herein described method of making compound lumber, which consists in assembling strips of material and gluing them end for end and edge vto edge. to form a slab. and between opposite longitudinally disposed edge strips extending the b'eting the outer edges of the opposite longitudinal full-length edge strips of the panel.

3. The herein described method of making com;

pound lumber, which consists in assembling and gluing together strips to form a rectangular slab between longitudinal edgestrip's extending the L full length of theslab, then severing the slaband edge strips longitudinally of the plane thereof into a plurality of panels, and then rabbeting the outer edges of the continuous edge strips.

4. The herein described method of-making corripound lumber, which consists in taking a plurality of rectangular strips of irregular lengths and shaping their ends and longitudinal edges for mutual interfitting, assembling and interfitting'the strips into a rectangular slab whereby each'face of each panel comprises the continuous faces of said strips and "gluing the joints between the interfitting parts, then severing theslab longitudinally in the plane thereof into panels, and then rabbeting opposite edges of the panels. f

I i 5; The herein described method of making thin wooden panels for lining closets and the like from small irregular-lengths ofwood, which consists in assembling small irregular lengths of wood end to end and edge to edge and gluing together the abutting ends and edges of said lengths of wood intoa slab, whereby each face'of each panel comprises the continuous faces ofsaid lengths of wood, then'severing the slab in the plane thereof and dividing it into a plurality of panels of less thickness than the slab, and then long itudin'ally ROBERT H.- HARWELL. 

